Rotation problem?

A car traveling on a flat circular track accelerates uniformly from rest with a tangential acceleration of 1.7m/s^2. The car makes it one quarter of a way around the circle before it skids off the track, Determine the coeficient of static friction between the car and track?

I really have no clue at all at how to go about this problem, any pointers or hints would be great. Thank you very much